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Optoelectronic system and device integration for quantum-dot light-emitting diode white lighting with computational design framework

We propose a computational design framework to design the architecture of a white lighting system having multiple pixelated patterns of electric-field-driven quantum dot light-emitting diodes. The quantum dot of the white lighting system has been optimised by a system-level combinatorial colour opti...

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Bibliographic Details
Published in:Nature communications 2022-08, Vol.13 (1), p.4189-4189, Article 4189
Main Authors: Samarakoon, Chatura, Choi, Hyung Woo, Lee, Sanghyo, Fan, Xiang-Bing, Shin, Dong-Wook, Bang, Sang Yun, Jo, Jeong-Wan, Ni, Limeng, Yang, Jiajie, Kim, Yoonwoo, Jung, Sung-Min, Occhipinti, Luigi G., Amaratunga, Gehan A. J., Kim, Jong Min
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Language:English
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Summary:We propose a computational design framework to design the architecture of a white lighting system having multiple pixelated patterns of electric-field-driven quantum dot light-emitting diodes. The quantum dot of the white lighting system has been optimised by a system-level combinatorial colour optimisation process with the Nelder-Mead algorithm used for machine learning. The layout of quantum dot patterns is designed precisely using rigorous device-level charge transport simulation with an electric-field dependent charge injection model. A theoretical maximum of 97% colour rendering index has been achieved with red, green, cyan, and blue quantum dot light-emitting diodes as primary colours. The white lighting system has been fabricated using the transfer printing technique to validate the computational design framework. It exhibits excellent lighting performance of 92% colour rendering index and wide colour temperature variation from 1612 K to 8903 K with only the four pixelated quantum dots as primary. Next generation smart lighting requires high colour rendering and wide colour controllability. Here, Jung et al. realise, via a systematic colour optimisation and a computational charge transport simulation, white quantum dot light-emitting diodes with high colour performance.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-022-31853-9